html,
body {
    width: 100%;
    height: 100%;
}

.box {
    height: 100%;
    background: url(../images/indexbg.jpg) no-repeat 0 0 / 100% 100%;
}

.box .jumbotron {
    background-color: rgba(6, 6, 6, 0.4);
}

.box .jumbotron h1,
.box .jumbotron p {
    color: #f4f4f4;
}

.box .jumbotron .p2 {
    text-indent: 2em;
}